Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 64 for “"BLI"”.
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Öresundsregion - bli till! : De geografiska visionernas diskursiva rytm
This thesis is about how geographical visions worked as discursive tools in the institutionalisation of the Öresund Region. The geographical vision is defined as a cognitive set of imagined and material pictures of the future structured as a spatial whole. The geographical vision is, in addition to …
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Effect of BLI-Type Inlet Distortion on Turbofan Engine Performance
Boundary Layer Ingestion (BLI) is currently being researched as a potential method to improve efficiency and decrease emissions for the next generation of commercial aircraft. While re-energizing the boundary layer formed over the fuselage of an aircraft has many system level benefits, ingesting …
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Topics on conceptual design of the D8 aircraft : fuel burn uncertainty estimate and BLI propulsor loss modeling
… is the modeling of Boundary Layer Ingesting (BLI) propulsor losses at a level of fidelity appropriate for turbomachinery conceptual design analysis, i.e. nonaxisymmetric throughflow analysis. Two contributions to such an analysis based on a body force framework are presented in this thesis: a …
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Quantification of the boundary layer ingestion benet for the D8-series aircraft using a pressure rake system
… the aerodynamic boundary layer ingestion (BLI) benet for the D8 aircraft advanced transport concept. The experiments involved a back-to-back comparison between two D8 aircraft configurations: a podded propulsion system (non-BLI) and a fuselage integrated propulsion system (BLI). The BLI …
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A Tail-Integrated Boundary-Layer Ingesting Propulsion System for Turbo-Electric Aircraft
… aircraft with boundary layer ingestion (BLI). This includes (i) definition of tail BLI electric fans and (ii) integration of the BLI propulsors on an aircraft tail, to meet the propulsive power requirements and performance goals, i.e. separation-free and shock-free operation with fuel …
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A genetic and molecular analysis of the bli-4 locus of Caenorhabditis elegans, an essential gene encoding KEX2-like subtilisin-typw serine endoproteases
… genetic mutations and molecular structure of the bli-4 (I) gene of Caenorhabditis elegans. The bli-4locus had been previously defined by a single recessive mutation, e937, which disrupts the structure of adult-stage cuticle causing the formation of fluid-filled separations of the cuticle layers, …
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Data-Efficient Bilingual Lexicon Induction with Pretrained Language Models
… on the task of Bilingual Lexicon Induction (BLI) and proposes a series of innovative data-efficient BLI approaches aimed at automatically inducing high-quality bilingual dictionaries in low-data scenarios, thereby bridging the lexical gaps between languages. While previous BLI methods rely on …
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Aerodynamics and Power Balance of Boundary Layer Ingesting Aircraft
… and re-energising it, Boundary Layer Ingestion (BLI) offers the potential for considerable fuel savings. However, it remains unclear which the most promising aircraft configuration for BLI is. Furthermore, the tight integration between the propulsor and the airframe poses great challenges to …
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Analysis of civil aircraft propulsors with boundary layer ingestion
… design, for a boundary layer ingesting (BLI) propulsion system for advanced civil transport aircraft. For the former, configuration performance analysis shows BLI yields a reduction in mechanical power required to propel a given aircraft. For the latter, fan turbomachinery design …
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Evaluation of propulsor aerodynamic performance for powered aircraft wind tunnel experiments
… aircraft utilizing boundary layer ingestion (BLI); mechanical ow power is a surrogate for aircraft fuel burn. Back-to-back experiments of BLI and non-BLI aircraft configurations to assess the BLI benet directly measured electrical power, and supporting experiments were performed in a 1x1 foot …
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Novel Applications of Biolayer Interferometry to Investigate Molecular Interactions
<p>In this study, BLI is used to explore various molecular interactions to demonstrate molecular binding and to provide quantitative characterization of binding kinetics and affinities of phage-protein and DNA-protein interactions. The results of this study demonstrate novel use of biolayer …
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Potential Roles of Peroxidases In Caenorhabditis Elegans Innate Immunity
… infection and is mediated by the dual oxidase BLI-3, which produces H<sub>2</sub>O<sub>2</sub>. RNAi (RNA interference) to reduce the amount of BLI-3 results in a significant increase in susceptibility to pathogens, suggesting BLI-3 has a role in the immune response. However, …
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Distortion Tolerant Fan Design
Boundary Layer Ingestion (BLI) technology could achieve a fuel burn reduction of up to 15%. However, the fans need to operate in severely distorted flow, which affects the blades’ mechanical integrity, aerodynamic efficiency and stability. The aim of this thesis is to understand the impact of …
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Aerodynamic benefits of boundary layer ingestion for the D8 double-bubble aircraft
… of the aerodynamic boundary layer ingestion (BLI) benefit of the D8 advanced civil aircraft design. Two independent methods were applied for 1:11 scale (4.1 m wingspan) powered aircraft model experiments in the NASA Langley 14x22-foot Subsonic Wind Tunnel. The metric used as a surrogate for …
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Performance of a boundary layer ingesting propulsion system
… of aircraft fuselage boundary layer ingestion (BLI). The emphasis is on defining the role that the turbomachinery (i.e., the fan, in the ultra high bypass engines considered) plays in establishing the flow benefit due to BLI. A three-dimensional body force approach to fan response to inlet …
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The power balance method For aerodynamic performance assessment
… configurations such as boundary layer ingesting (BLI) aircraft. The thesis provides evidence of the major benefits of the power balance method, and descriptions of its limitations, for three applications: 1) derivation of an analytic expression of profile drag estimates for conceptual design …
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Application of overset grids for aerodynamic assessment of an advanced civil transport aircraft
… designed to use boundary layer ingestion (BLI). Comparison with wind tunnel results on unpowered configurations show that the computed and measured lift slopes agree within 15% and the drag at simulated cruise point to within 20%. Computations have been carried out for an initial and a …
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Trade space assessment of electrified commercial aircraft
… power reduction from boundary layer ingestion (BLI), a technology that could be enhanced by electrification, is characterized and bounded by power balance analysis. An aircraft system model extends this analysis to capture the weight and performance trades of electrified architectures, as …
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Design of a model propulsor for a boundary layer ingesting aircraft
… aircraft with boundary layer ingestion (BLI). The electrically powered single-stage propulsors represent the ultra-high bypass ratio turbofan engines on a full-scale conceptual aircraft previously designed at MIT. Powered models will use these propulsors in both podded and boundary layer …
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The effect of dietary genistein on breast cancer metastasis
… conducted: 1) to apply bioluminescence imaging (BLI) techniques to monitor the tumor progression in vivo of the two dietary groups; 2) to determine the effect of genistein on the tumor burden of the India ink-stained lungs, one of the common metastatic sites; 3) to evaluate the effect of …
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